# Boston Red Sox player injury updates > Live situation record from CLSTR: https://clstr.news/situations/boston-red-sox-player-injury-updates > Updated: 2026-09-11T02:32:36.000Z. Sources: 29. Developments: 4. The Boston Red Sox have experienced a series of roster changes due to player injuries. On August 13, the team placed reliever Garrett Whitlock on the 15-day injured list because of right elbow inflammation, recalling Greg Weissert from Triple-A Worcester to fill the spot. By August 15, additional injuries impacted the roster. Designated hitter Masataka Yoshida was placed on the 10-day injured list with a left hamstring strain sustained during a game against the Pittsburgh Pirates. Simultaneously, reliever Justin Slaten was placed on the 15-day injured list for right elbow inflammation; Slaten indicated he had been pitching through discomfort for much of the season. To address these absences, the club recalled catcher Mickey Gasper and left-hander Raymond Burgos from Triple-A Worcester, while shortstop Trevor Story was sent to Triple-A for a rehab assignment related to a sports hernia. On August 31, the injury list expanded to include first baseman Willson Contreras, who was placed on the 10-day injured list following a left hamstring strain sustained during a game against the New York Yankees. Contreras, who leads the team in home runs (26) and RBIs (79), exited the game in the seventh inning after experiencing tightness in an injury he has been managing for over a month. Interim manager Chad Tracy stated the decision was made to allow Contreras to “recover fully for the final stretch of the season.” To fill his vacancy, the Red Sox recalled Mickey Gasper from Triple-A Worcester, with Gasper expected to take over duties at first base. On September 9, outfielder Eli White was placed on the 10-day injured list with a right foot ligament injury, leading to the recall of infielder Anthony Seigler from Triple-A Worcester. ## Claims - Willson Contreras has been placed on the 10-day injured list due to a left hamstring strain. (corroborated by 3 sources) - Mickey Gasper has been recalled from Triple-A Worcester to replace Contreras on the active roster. (corroborated by 3 sources) - Contreras has recorded 23 to 26 home runs and 70 to 79 RBIs during his first season with the Red Sox. (corroborated by 3 sources) - The injury occurred in the third inning while Yoshida was running the bases. (corroborated by 2 sources) - Anthony Seigler replaced Yoshida as the designated hitter. (corroborated by 2 sources) - Masataka Yoshida left the game due to left hamstring tightness. (single source) - Since July 5, Yoshida has batted .307 with three home runs and 17 RBIs in 30 games. (single source) - Contreras exited a game against the New York Yankees on Sunday due to the injury. (single source) ## Timeline ### 2026-09-11: Boston Red Sox face roster setbacks with injuries to Eli White and Kristian Campbell The Boston Red Sox have placed outfielder Eli White on the 10-day injured list with a foot injury, while prospect Kristian Campbell has been sidelined by the Worcester Red Sox with a foot contusion. 2 sources. https://clstr.news/cluster/boston-red-sox-face-roster-setbacks-with-injuries-to-eli-white-and-kristian-campbell ### 2026-08-31: Boston Red Sox place Willson Contreras on 10-day injured list The Boston Red Sox placed first baseman Willson Contreras on the 10-day injured list with a hamstring strain, recalling Mickey Gasper to the active roster. 15 sources. https://clstr.news/cluster/willson-contreras-placed-on-red-sox-10-day-injured-list ### 2026-08-15: Boston Red Sox place Masataka Yoshida and Justin Slaten on injured list The Boston Red Sox placed DH Masataka Yoshida on the 10-day IL with a hamstring injury and reliever Justin Slaten on the 15-day IL with elbow inflammation. 17 sources. https://clstr.news/cluster/masataka-yoshida-leaves-red-sox-game-with-hamstring-injury ### 2026-08-13: Boston Red Sox reliever Garrett Whitlock placed on 15-day IL The Boston Red Sox placed reliever Garrett Whitlock on the 15-day IL with elbow inflammation, recalling Greg Weissert from Triple-A amid a recent six-loss stretch. 2 sources. https://clstr.news/cluster/boston-red-sox-reliever-garrett-whitlock-placed-on-15-day-il --- Cite as: Boston Red Sox player injury updates. CLSTR, https://clstr.news/situations/boston-red-sox-player-injury-updates